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Old 06-16-2017, 02:03 PM   #123
OKGMC4
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Join Date: Oct 2009
Location: Broken Arrow, OK
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Re: Mr Green Jeans - the 69 (or not) chevy, er gmc, project

Quote:
Originally Posted by knomadd View Post
I had the same issue with my POL crossmember. Haven't opened them up yet though. What diameter driveshaft are you running?
I didn't verify but the driveshaft shop guy said 3.5". He asked how much power I was going to make because he thought the 1350 joints were overkill. I told him 475 to 500 crank hp and he said this should be good. My 56 GMC with a stock 5.3L is running a much smaller shaft, but I just had a 70 chevelle shaft (that I already had) cut down to fit.
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56 GMC BUILD THREAD:
http://67-72chevytrucks.com/vboard/s...d.php?t=368649

69 long bed Chevy turned 67 gmc jimmy roadster:
https://67-72chevytrucks.com/vboard/...d.php?t=851167
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